Views: 1 Author: Site Editor Publish Time: 2023-06-13 Origin: Site
The three -color lace elastic fabric developed by the four types of fiber -developed fiber development of an artificial silk, nylon, modified polyester filament, and Laica. According to the dyeing performance and characteristics of the fiber, the dyeing process includes water washing oil, fixed billet, and dyeing filaments. , Nylon long silk, modified polyester long shredded bath method, and finished product fixed. Production practice has shown that the dyeing effect is ideal, stable size, and various performance tests can meet customer requirements.
Lace fabric is the darling of ladies' clothing elements. Because of the texture of the texture, it is thin and transparent, with mysterious and elegant artistic effects, and is widely used in women's personal clothes. At present, there are diverse types of lace in the market. It is commonly woven from one or two fibers, and the lace elastic fabric developed by three or more fibers uses a reasonable dyeing process to dye three or more colors. It can achieve colorful and colorful visual effects, and give lace high -end, fashionable, exquisite, rich in layers, and different styles.
The elastic fabrics described in this article are made of artificial silk fiber, nylon long silk, modified polyester filament, and Lycra fibrous fibers. It is a more complicated and technical project for a variety of lace elastic fabrics made of a variety of fiber -woven lace elastic fabrics. According to the characteristics and performance of the raw materials and dyeing materials, a reasonable dyeing and rectification process should be formulated to fully reflect the elasticity of lace elasticity High -quality and high -end fabric.
1. The performance and characteristics of fabric fibers
Artificial silk fiber has excellent performance in absorbing and breathability. It has the characteristics of smooth and cool, breathable, anti -static, dyeing and other characteristics. Due to good hygroscopicity and comfortable wearing, it is often used in various synthetic fibers for various types of clothing and decoration. Good dyeing performance, you can get bright colors, and active dye dyeing can be used.
Nylon has the advantages of high strength, good abrasion resistance and high elasticity. It is more suitable for producing lace fabrics with high stretching and strength requirements for yarn. Generally, acid dye dyeing is generally dyed.
The modified polyester filament used is that the dye can be dyeing polyester, with high fiber strength, good impact resistance, heat resistance, corrosion resistance, soreness, acid resistance, easy to dry and dry, good shape.
Increased the fourth single content of modified polyester long silk, the fiber has increased the activity capacity of the Victoria Molecular Chain Segment, increased its plastic increase and expansion level, making the fiber structure more relaxed, and greatly reducing the chromaton temperature. Under normal pressure, you can dye dyeing dyeing, reduce energy consumption, and improve the utilization of dyes.
As a good elastic fiber with a good stretching response, Lycra fiber can give the fabric's excellent elasticity. It is necessary to use a small amount of decentralized dye or spandex color dyeing as appropriate.
The above four fiber -made lace elastic fabrics have the advantages of light, pine, soft, comfortable, and durable, and have good use of performance.
2. Research on the dyeing processing method
2.1 Dyeing process process
The material ratio used is: 15%artificial silk, 44%nylon filament, 32%modified polyester filament, and 9%in Lyca
According to the performance and characteristics of the fiber, choosing the appropriate dye and dyeing technology dyeing artificial silk, nylon long silk, and modified polyester filaments are the focus of this article. The dyeing of nylon long silk and modified polyester filament can use acidic dyes and cationic dyes to control the appropriate dyeing conditions and use a bath method to dye a good two -color effect.
Use predetermined and finished products to stabilize the cloth surface specifications. Combined with the fiber structure and performance of the fabric, the dyeing process process is formulated as follows: the gray fabric removal → predetermined → dyeing (first dyeing the silk, the rear dyeing nylon / modified polyester filament) → finished fixed → inspection.
2.1.1 Black cloth removal of oil
Because the fabric contains more chemical fibers and has various oil agents, if it cannot be cleared, it will cause defects such as crossbar, dyeing, and white spots. Therefore, oil removal should be treated before dyeing.
Faculty removing oil is generally carried out in continuous flat -amplitude removal. The process conditions should be soft, the neutral oil deodorant LYS can be used, and the temperature should not exceed 80 ° C. The quality of the left, middle, right, middle and tails is consistent.
2.1.2 High temperature preparation shape
The predetermined use of the thermoplasticity of the nylon filament, the modified polyester filament, and the Lycra, eliminate or reduce the tension of tension generated in the spinning and weaving processing, avoid excessive relaxation of fibers in the subsequent process, and improve the super molecular structure of the fiber. This improves the stability of the fabric shape.
The higher the predetermined temperature, the higher the size stability of the fabric, the more effective the improvement of the crease, but the too high will also cause the fabric's elasticity to lose greater loss. The specifics should be based on the thick specifications of the fabric and the Lycra fibrousness. The shape technology does not damage the fiber, but also ensures the size stability of the fabric.
The predetermined temperature we use is 190 ° C, and the time is 25-30 seconds.
Because artificial silk / nylon long silk / modified polyester filament / Lycra does not contain natural impurities, it has a good whiteness itself, so it can be directly dyed before dyeing.
a. Culbral technology
Take dark green / rose / pink / as an example, the artificial silk dye is dark green.
Artificial silk dyeing process prescription and conditions
Prescription and conditions (bath ratio 1:10):
Active yellow HE4R 0.121%
Active Blue H-EGN 0.205%
NA2S04 50 g/L
Na2c03 15 g/l
Soft agent PA 1.0 G/L
Osmotic agent JFC L.0 G/L
Heating rate 1.O ℃/min/min
Insulation time 80 ℃ × 30 min
b. Dyeing nylon long silk / modified polyester filament
Nylon long silk stain rose, modified polyester long silk dye pink.
Dyeing nylon long silk / modified polyester long silk chromatin
Prescription and conditions (bath ratio 1:10):
Acid Red RLS 0.0585%
Acid yellow PA-1 0.0103%
Acid blue PA-1 0.014%
Ion (red) GRL 200% 0.0012%
Cation (yellow) GL EC 400% 0.0083%
Ion (blue) GRL 300% 0.0052%
Water absorption TM 2.0 g/L
(NH4) 2S04 2.0 g/L
Acidal uniform dye AD 0.60 g/L
Activation Smooth M.0%
Anti -sinking agent S 1.0%
Acid HAC/NAAC L/0.5
Insulation temperature × time 98 ℃ × 30 min
The role of a soft agent CN is to reduce the friction coefficients of the fabric and equipment, thereby reducing the production of fabric scratches and wrinkles. Add water absorption TM to suck water and sweat in the dyeing solution to increase the water absorption and sweat function of the fabric.
c. Post -treatment condition
Soap washing prescription and conditions:
Soap washing dm l.0%
Insulation temperature × time 55 ℃ × 10min
Fixed color prescription and conditions:
1.30 g/l acetic acid
Solid agent NT 3.0 G/L
Insulation temperature × time 70 ℃ × 30 min
2.2.4 finished product fixed
The fixed finished product is an important part of the fabric dyeing processing process, which can further stabilize the size of the fabric cloth and eliminate the slight creases and wrinkles of the fabric in the dyeing process to improve.
Because the predetermined type, the fabric's cloth door width, gram quality and other physical indicators, the size of the fabric is basically stable. When the finished product is fixed, according to the requirements of the opposite side of the customer's fabric and feel, add a certain amount of weight deodorant, anti -bacterial, fixing agent, and add an appropriate amount of soft agent and hydrophilic agent to the fixed pulp side. To give the fabric better softness, hygroscopicity, etc., wearing comfort. But pay attention to the ion nature of the fixed auxiliary to avoid sewage.
Fixed slurry formula:
Antiococcinist DA 35 G/L
Devinic agent FT 15 g/L
Water absorption soft oil n 20 g/l
0.3 g/l citric acid
The fixed conditions are: 150 ° C × 10s, the speed of 30m/min.
Determination of the fixed temperature: Because the dye dye dye color changes in the critical temperature of about 140-150 ° C, too high or too low temperature will not make the fabrics get excellent performance, and Lycra fiber is very sensitive to fixed temperature and time. The temperature is too much. The temperature is too much. The elasticity of the high and too long fabric will be reduced. Therefore, the fixed temperature is about 150 ° C, and it cannot be stopped in the middle of the fixed shape, so as not to cause the segmental color changes in the fabric due to inconsistency due to inconsistency.
3. The effect of dyeing process conditions on dyeing quality
3.1 Choice of dyeing silk dye
The PROCION HE type produced by the UK ICI is a high -temperature active dye that is specially suitable for exhaustive dyeing. It has excellent color light, dyeing economy, good dyeing, and excellent color combination. To prevent nylon silk, you can choose to choose from First add soda, and then add the Yuanming powder for 20min, and then add active dye dyeing. The thermal insulation time can be changed with different dyes.
3.2 Dyeing nylon long silk / modified polyester long wire staining process
3.2.1 The order of adding dyes with dyeing
The acid dye is used for nylon wire dyeing. It should control the appropriate starting temperature according to the size and diffusion of the dye, and the high and low dyeing performance.
The cationic dye is highly affinity for modified polyester filaments. Due to the fast adsorption of dyeing, it is prone to dyeing uneven phenomenon. Once the dyeing is uneven, it is difficult to correct it by extending the dyeing time.
Because the ionic dyes of acidic dyes are opposite to the ionic dye, the dyeing order must be paid to the process when formulating the process. Therefore, it is dissolved separately and adds the effects of the anterogeneous sustained dye M and the anti -sinking agent S to achieve the effect of uniform dye.
Generally, a two -step method is used to dye the method. It is necessary to take into account the different characteristics of dyes and materials to formulate processes. First add acid dyes, and then add cations to dye and warmed the same bath dye polyester.
Temperature is an important factor in controlling uniform dye. Due to the dyeing nylon on the acidic dye, there are part of the dyeing from 40 ° C, and when the modified polyester pillar is dyed with cationic dye, the amount of dyeing below 70 ° C is very small. At 85 ° C), the upper dye rate of dyes began to increase rapidly. Therefore, we select the chromosomal technology, strictly control the heating rate, and heating in sections to ensure that the dyeing effect is dyed.
3.2.3 Dye bath pH value control
The pH value of acid dye and cationic dye dyeing is generally between 4-5. Generally, acetic acid is adjusted, and sodium sulfate or sodium acetate is added to the dye bath. To obtain a stable pH value.
3.2.4 The use of uniform dye, slow dye and anti -sinking agent
Add an acid evenly dye AD during acid dye dyeing, so that the nylon wire is dyed evenly. Add anion ion ion mostromagnet m before adding cations. Due to the use of anion -ion slow dye M, cationic dyes and anion dyes can be stained with the same bath, so Acid dye yang/ion dyeing one bathing method creates conditions.
Add anion -ion slow dye M to combine it with cation dyes into a complex with low solubility. I suspended in the dye bath. The fiber affinity has less affinity, which reduces the concentration of cationic dye in the free -to -out dyeing rate. As the dyeing temperature is improved, the complex is gradually decomposed, and the free -ion -dye dye is released, which gradually increases the upper dye rate, thereby achieving the purpose of evenly dyeing.
In order to avoid generating complex precipitation, while adding an anterogeneous sustained dye M, it is necessary to add a precipitant S.